305148858872 has 128 divisors (see below), whose sum is σ = 693384753600. Its totient is φ = 124026163200.

The previous prime is 305148858823. The next prime is 305148858881. The reversal of 305148858872 is 278858841503.

It is a super-2 number, since 2×305148858872² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9677372 + ... + 9708852.

Almost surely, 2^305148858872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305148858872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346692376800).

305148858872 is an abundant number, since it is smaller than the sum of its proper divisors (388235894728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305148858872 is a wasteful number, since it uses less digits than its factorization.

305148858872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31777 (or 31773 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 59.

The spelling of 305148858872 in words is "three hundred five billion, one hundred forty-eight million, eight hundred fifty-eight thousand, eight hundred seventy-two".